ACYLATED FLAVONOL SOPHOROTRIOSIDES FROM PEA SHOOTS

Seven flavonols were isolated and identified from Pisum sativum (cv So lara) shoots. The 3-glucoside, and 3-sophorotrioside [beta-D-glucopyra nosyl(1 --> 2)-beta-D-glucopyranosyl(1 --> 2)-beta-D-glucopyranoside] of quercetin, the 3-sophorotrioside of kaempferol, and the acylated de rivatives of quercetin 3-sophorotrioside with p-coumaric, caffeic, fer ulic and sinapic acids on the hydroxyl at the 6-position of the termin al sugar. The caffeic and sinapic acid esters are two new naturally oc curring compounds. This is the first report in which the structures of the p-coumaryl- and ferulyl-sophorotriosides of quercetin, which were previously reported from pea leaves, have been completely established by means of H-1 NMR studies including COSY, NOESY and TOCSY experimen ts.